Synonyms: 17-alpha-Butadiynylestra-1,3,5(10)-triene-3,17-beta-diol;17-alpha-Butadiynyl-3,17-beta-dihydroxy-1,3,5(10)-estratriene;ESTRA-1,3,5(10)-TRIENE-3,17-beta-DIOL, 17-alpha-BUTADIYNYL-;AC1L27FQ;LS-64764;(17S)-17-buta-1,3-diynyl-13-methyl-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthrene-3,17-diol;2010-52-8